KNF LABOPORT SH820G Translation Of The Operating Instructions page 123

Vacuum system SH820G / SR820G SH840G / SR840G
Translation of Originial Operating Instruction, KNF 325562-325564 06/21
3. Carefully remove the pump heads to the side (see Fig.
13).
The pneumatic connections remain mounted in the pump
heads.
Fig.13: Remove pump heads
Replace diaphragm
On the pump, the diaphragms (7) are changed succes-
sively to ensure that the shim rings (8) are used in the
same quantity as previously.
1. Press down one diaphragm (7) so that the other di-
aphragm is in the upper change point.
Servicing
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